Search a number
-
+
1930069 = 6728807
BaseRepresentation
bin111010111001101010101
310122001120001
413113031111
5443230234
6105211301
722256011
oct7271525
93561501
101930069
1110a90a9
12790b31
1352766b
14383541
15281d14
hex1d7355

1930069 has 4 divisors (see below), whose sum is σ = 1958944. Its totient is φ = 1901196.

The previous prime is 1930057. The next prime is 1930073. The reversal of 1930069 is 9600391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9600391 = 23940169.

It is a cyclic number.

It is not a de Polignac number, because 1930069 - 217 = 1798997 is a prime.

It is a super-2 number, since 2×19300692 = 7450332689522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14337 + ... + 14470.

It is an arithmetic number, because the mean of its divisors is an integer number (489736).

21930069 is an apocalyptic number.

It is an amenable number.

1930069 is a deficient number, since it is larger than the sum of its proper divisors (28875).

1930069 is an equidigital number, since it uses as much as digits as its factorization.

1930069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28874.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1930069 is about 1389.2692323664. The cubic root of 1930069 is about 124.5061904526.

The spelling of 1930069 in words is "one million, nine hundred thirty thousand, sixty-nine".

Divisors: 1 67 28807 1930069